10 add vector

Adding local vector data (e.g., shp, geojson, kml) to the map

Uncomment the following line to install leafmap if needed.

In [1]:

# !pip install leafmap

In [2]:

import leafmap

In [3]:

m = leafmap.Map()
m

Out[3]:

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This demo is based on the ipyleaflet plotting backend. The folium plotting backend does not have the interactive GUI for loading local vector data.

Add a GeoJSON to the map.

In [4]:

m = leafmap.Map(center=[0, 0], zoom=2)

in_geojson = 'https://raw.githubusercontent.com/giswqs/leafmap/master/examples/data/cable-geo.geojson'
m.add_geojson(in_geojson, layer_name="Cable lines")

m

Out[4]:

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Add a GeoJSON with random filled color to the map.

In [5]:

m = leafmap.Map(center=[0, 0], zoom=2)
url = "https://raw.githubusercontent.com/giswqs/leafmap/master/examples/data/countries.geojson"
m.add_geojson(url, layer_name="Countries", fill_colors=['red', 'yellow', 'green', 'orange'])
m

Out[5]:

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Use the style_callbackfunction for assigning a random color to each polygon.

In [6]:

import random

m = leafmap.Map(center=[0, 0], zoom=2)

url = "https://raw.githubusercontent.com/giswqs/leafmap/master/examples/data/countries.geojson"

def random_color(feature):
    return {
        'color': 'black',
        'fillColor': random.choice(['red', 'yellow', 'green', 'orange']),
    }

m.add_geojson(url, layer_name="Countries", style_callback=random_color)
m

Out[6]:

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Use custom style and hover_style functions.

In [7]:

m = leafmap.Map(center=[0, 0], zoom=2)

url = "https://raw.githubusercontent.com/giswqs/leafmap/master/examples/data/countries.geojson"

style = {
    "stroke": True,
    "color": "#0000ff",
    "weight": 2,
    "opacity": 1,
    "fill": True,
    "fillColor": "#0000ff",
    "fillOpacity": 0.1,
}

hover_style = {"fillOpacity": 0.7}

m.add_geojson(url, layer_name="Countries", style=style, hover_style=hover_style)
m

Out[7]:

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Add a shapefile to the map.

In [8]:

m = leafmap.Map(center=[0, 0], zoom=2)

in_shp = '../data/countries.shp'
m.add_shp(in_shp, layer_name="Countries")

m

Out[8]:

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Add a KML to the map.

In [9]:

m = leafmap.Map()

in_kml = '../data/us-states.kml'
m.add_kml(in_kml,layer_name="US States KML")

m

Out[9]:

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The add_vector function supports any vector data format supported by GeoPandas.

In [10]:

m = leafmap.Map(center=[0, 0], zoom=2)
url = "https://raw.githubusercontent.com/giswqs/leafmap/master/examples/data/countries.geojson"
m.add_vector(url, layer_name="Countries", fill_colors=['red', 'yellow', 'green', 'orange'])
m

Out[10]:

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In [11]:

m = leafmap.Map()

In [12]:

in_shp = '../data/countries.shp'
in_geojson = '../data/us-states.json'
in_kml = '../data/us-states.kml'

In [13]:

m.add_shp(in_shp, layer_name="Shapefile")

In [14]:

m.add_geojson(in_geojson, layer_name="GeoJSON")

In [15]:

m.add_kml(in_kml, layer_name="KML")

In [16]:

m

Out[16]:

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Last update: 2021-09-17